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The objective of this study was to characterize the genetics of second generation (F2) koi Cyprinus carpio × goldfish Carassius auratus hybrids. Spermatozoa produced by a novel, fertile F1 male were found to be diploid by flow‐cytometric analysis. Backcross (F1 female × C. carpio male and C. carpio female × F1 male) juveniles were triploid, confirming that female and male F1 hybrids both produced...
Background. The paddlefish, Polyodon spathula (Walbaum, 1792), is an important species for commercial and recreational fisheries throughout the central United States. Populations have declined in many areas due to river modification, loss of spawning habitat, pollution, and over-exploitation. Assessing genetic diversity of a species is an important consideration for developing conservation plans....
The effect of ploidy on scale‐cover pattern in linear ornamental (koi) common carp Cyprinus carpio was investigated. To obtain diploid and triploid linear fish, eggs taken from a leather C. carpio female (genotype ssNn) and sperm taken from a scaled C. carpio male (genotype SSnn) were used for the production of control (no shock) and heat‐shocked progeny. In heat‐shocked progeny, the 2 min heat shock...
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